Simple-structure optical fiber cables manufactured without stranding processes

The design and characteristics of an optical-fiber cable which can be manufactured in one tandem process have been described. The structural design has been made in view of attaining stable transmission characteristics and long-term reliability. The relation between excess fiber length and cable structure was investigated. Optical loss increase due to excess fiber length was clarified. The fabricated cable has the following advantageous characteristics: (1) fiber strain did not occur when the cable was elongated by less than 0.2%; (2) the loss changes were less than 0.1 dB/km due to manufacturing and temperature changes within a range of -20-60 degrees C; and (3) the cable exhibited excellent mechanical characteristics.<
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